Image on a specific Single page only?

I just have one page I’d like a different background on, but when I click “single page” it puts it on every single page which I guess is what it’s supposed to do but is there not on option for a specific page?

If you wish to show a background image only on a specific page, but no other pages, the easiest is to set the “Background Image Set” (found on the Background -> Settings page) to “None (deactivated)”. Then edit the specific page, and in the “Background” box, found below the text editor, you can select the Image Set you’d like to use.